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Micronics U1000-HM User Manual

Clamp on ultrasonic heat meter
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Micronics
Micronics U1000-HM
Clamp On Ultrasonic Heat Meter
Telephone: +44(0)1628 810456
Issue 2.5 July 17
User Manual
Micronics Ltd, Knaves Beech Business Centre, Davies Way, Loudwater,
High Wycombe, Bucks HP10 9QR
Facsimile: +44(0)1628 531540
www.micronicsflowmeters.com
U1000-HM User Manual
E-mail:
sales@micronicsltd.co.uk
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Summary of Contents for Micronics U1000-HM

  • Page 1 Micronics U1000-HM User Manual Micronics U1000-HM Clamp On Ultrasonic Heat Meter User Manual Micronics Ltd, Knaves Beech Business Centre, Davies Way, Loudwater, High Wycombe, Bucks HP10 9QR Telephone: +44(0)1628 810456 Facsimile: +44(0)1628 531540 E-mail: sales@micronicsltd.co.uk www.micronicsflowmeters.com Issue 2.5 July 17...

  • Page 2: Table Of Contents

    Key Switches ............................6 Installing The U1000-HM ..........................7 Preparation ............................8 Sensor Separation ..........................8 Attaching The U1000-HM To The Pipe ..................... 10 Adaptors For Small Pipes ........................11 Attaching The Temperature Sensors ....................12 U1000-HM Interface Cables ......................13 Connecting The U1000-HM To The Supply ..................

  • Page 3: General Description

    9mm for metal pipes and 10.5mm for plastic  Simple to install temperature sensors  Compact, rugged and reliable, the U1000-HM has been designed to provide sustained performance in industrial environments U1000 standard features include: ...

  • Page 4: Quick Start Procedure

    Micronics U1000-HM User Manual 2 Quick Start Procedure The following procedure details the steps required to set up the heat meter. See the sections referred to if you are unsure about how to install the instrument. 1. Wire the electronics up to a 12 to 24V ac or dc power supply (7VA minimum per instrument) via the Blue and Brown wires.

  • Page 5: How Does It Work

    Micronics U1000-HM User Manual 3 How Does It Work? The U1000-HM is a clamp-on, ultrasonic flowmeter that uses a multiple slope transit time algorithm to provide accurate flow measurements. Figure 1 Principle of Transit-Time operation An ultrasonic beam of a given frequency is generated by applying a repetitive voltage pulse to the transducer crystals.

  • Page 6: User Interface

    Micronics U1000-HM User Manual 4 User Interface Figure 2 illustrates the U1000-HM user interface comprising:-  One 2 line x 16 character LCD with backlight  Four tactile key switches  Two LEDs Figure 2 U1000-HM User Interface 4.1 Key Switches >...

  • Page 7: Installing The U1000-Hm

    Key Point: Do not expect to obtain accurate results if the transducers are positioned close to any obstruction that distorts the uniformity of the flow profile. Micronics Ltd accepts no responsibility or liability if product has not been installed in accordance with the installation instructions applicable to the product.

  • Page 8: Preparation

    Micronics U1000-HM User Manual 5.1 Preparation 1. Before attaching the transducers, first ensure that the proposed location satisfies the distance requirements shown in Figure 3 otherwise the resulting accuracy of the flow readings may be affected. The unit is preconfigured for the application as follows :-...
  • Page 9 Micronics U1000-HM User Manual The diagram below shows how to adjust the separation of the sensors Figure 5 Separation Setting Issue 2.5 July 17 Page 9...

  • Page 10: Attaching The U1000-Hm To The Pipe

    Click electronic assembly onto guide rails and sensor assembly Figure 6 simple steps to attaching the U1000-HM on the pipe The locking screws and washers should be kept in case it is necessary to change the location of the guide rail and sensors.

  • Page 11: Adaptors For Small Pipes

    Micronics U1000-HM User Manual 5.4 Adaptors For Small Pipes Guide rails for small pipes are supplied with adaptors. The diagram below show how these are fitted around the pipe. The top part of the pipe adaptor clips into the ends of the guide rail.

  • Page 12: Attaching The Temperature Sensors

    Micronics U1000-HM User Manual 5.5 Attaching The Temperature Sensors The temperature sensors must be located at the input and output of the system that is being monitored. The area of pipe where they are to be attached must be free of grease and any insulating material.

  • Page 13: U1000-Hm Interface Cables

    5.7 Connecting The U1000-HM To The Supply The U1000-HM will operate within the voltage range 12 - 24V ac/dc. The supply must have a minimum rating of 7VA per instrument. Connect the external power supply to the Brown and Blue wires of the six core cable.
  • Page 14 Micronics U1000-HM User Manual  Correct 24VAC supply wiring, no connection to ground.  Incorrect 24V AC wiring, centertapped earth connection. The communications may fail if the Modbus master isn’t galvanically isolated.  Incorrect 24V AC wiring, earth low side connection. The communications may fail if the Modbus master isn’t galvanically isolated.

  • Page 15: Pulse Output Connection

    Micronics U1000-HM User Manual 5.8 Pulse Output Connection The isolated pulse output is provided by a SPNO MOSFET relay which has a maximum load current of 500mA and maximum load voltage of 48V AC. The relay also provides 2500V isolation, between the sensor’s electronics and the outside world.

  • Page 16: Powering Up For The First Time

    Micronics U1000-HM User Manual 6 Powering Up For The First Time Powering up for the first time will initiate the sequence shown in Figure 10: Select the option required and press the Figure 10 initial power up screens Issue 2.5 July 17...
  • Page 17 1. The Micronics start up screen is displayed for 5 seconds. 2. The user enters the pipe ID and selects the material (refer to section 6.1). 3. On pressing Enter in response to the Set Separation screen, the U1000-HM then checks for a valid signal.

  • Page 18: How To Enter The Pipe Id

    Micronics U1000-HM User Manual 6.1 How To Enter The Pipe ID Figure 11 shows the Enter Pipe ID screen after an initial power up. Figure 11 Enter Pipe ID Screen (Metric) Initially, the hundreds unit (050.0) will blink. Press the key to increment the hundreds digit (050.0) in the sequence 0, 1.

  • Page 19: Pulse Output

    Micronics U1000-HM User Manual If any of the parameters need to be changed from the default values, for example different units are required, then the menu system must be activated via the password (see section 8). Pulse Output Pulse output can be set up to operate in four modes: Volume, Frequency, Energy or Low Flow Alarm.

  • Page 20: Modbus

    Micronics U1000-HM User Manual Modbus The Modbus RTU interface is configured via the Modbus sub menu in the password controlled menu. The data rate can be selected in the range 1200 to 38400 baud. The address can be set in the range 1 to 126.
  • Page 21 Micronics U1000-HM User Manual 0x41 Units in Degrees Celsius 40015 0x98 Measured Temperature for Metric Units in iee754 (Hot) Degrees Fahrenheit for 0x00 40016 Imperial 0x00 0x41 Units in Degrees Celsius 40017 0x88 Measured Temperature for Metric Units in iee754...

  • Page 22: Information Screens

    Micronics U1000-HM User Manual Subsequent Power-ON Sequence If the power supply is cycled OFF then ON after the pipe data has been entered, all subsequent start- ups will use the same configuration as was previously entered. If the configuration needs to be changed for any reason, the user can make use of the password-controlled menu as described in section 8.

  • Page 23: Password Controlled Menus

    Micronics U1000-HM User Manual 7 Password Controlled Menus The password controlled menu allows the user some flexibility to change the default settings:  User Password (71360): Change the energy units   Change the dimensions from mm to Change the Modbus settings inches or vice-versa.
  • Page 24 Micronics U1000-HM User Manual 71360 MENU Total Energy: 606.64 kWh  Invalid &  OR No input for 10 seconds Enter Password: *****  Setup Menu User Menu:  Setup Λ  Modbus Menu User Menu: Modbus Setup Λ Pulse Output Menu ...
  • Page 25 Micronics U1000-HM User Manual SETUP MENU Range 0.79 – 4.33 Range 0.79 – 4.33 2.000 inches 1.969 inches Inches &  Select Dimensions: Select Dimensions: Invalid mm | inches mm | inches &  mm &  Invalid & Range 20 – 110mm Range 20 –...
  • Page 26 Micronics U1000-HM User Manual PULSE OUTPUT MENU Off &  Select Pulse: OFF | ON Λ Test mode press V or generate a 20ms pulse On &  Pulse Type: Volume/Energy/Frequency/ Low FlowAlarm Low Flow Alarm Energy &  & ...
  • Page 27 Micronics U1000-HM User Manual MODBUS MENU Invalid &  Range 1.0 to 126.0 Modbus Address: Valid &   Modbus Baud: 38400/19200/9600/4800/ 2400/1200 Select &  Modbus Comms: 8-None-2/8-None-1/ 8-Odd-1/8-Even-1 Select &  Figure 18 Modbus menu Issue 2.5 July 17...
  • Page 28 Micronics U1000-HM User Manual CALIBRATION MENU Damping Time [s]: Invalid &   Range 0.00 – 0.50 Zero Cut-off: 0.10 m/s 0.10 m/s Valid &  V To Set Zero Offset: Zero Offset Averaging…9 To Clear 0.000 l/min Done Invalid & ...

  • Page 29: Diagnostics Menu

    Micronics U1000-HM User Manual 8 Diagnostics Menu The diagnostics menu provides some additional information about the heat meter and its setup. The > menu can be accessed by pressing the key from flow reading screen. The menu shown below describes the various diagnostics items.

  • Page 30: Relocation Of Guide Rail

    Micronics U1000-HM User Manual Instrument Type: Set type of energy exchange, either Heating or Chiller. Heating Set location of the flow measurement, either Flow or Return. Installation: Flow Side Set fluid, either water or 30% glycol Fluid Type: Water Figure 20 Diagnostics Menu 9 Relocation Of Guide Rail If it is necessary to relocate the guide rail and sensor assembly use the following procedure.

  • Page 31: Appendix I - U1000-Hm Specification

    Micronics U1000-HM User Manual 10 Appendix I – U1000-HM Specification Table 1 lists the U1000-HM Product Specification. General Measuring Technique Transit time Measurement channels Timing Resolution ±50ps Turn down ratio 200:1 Flow velocity range 0.1 to 10m/s bidirectional Applicable Fluid types Clean water with <...
  • Page 32 90% RH at 50°C Max Display 2 line x 16 characters Viewing angle Min 30° Active area 58mm (W) x 11mm(H) Keypad Format 4 key tactile feedback membrane keypad Table 1 (cont.) U1000-HM Product Specification. Issue 2.5 July 17 Page 32...

  • Page 33: Appendix Ii - Default Values

    Micronics U1000-HM User Manual 11 Appendix II – Default Values The settings will be configured at the factory for either metric or imperial units. Parameter Default Value Parameter Default Value Dimensions Calibration Factor 1.000 Flow Rate l / min Zero Cut-off 0.10 m / s...

  • Page 34: Appendix Iii - Error And Warning Messages

    Micronics U1000-HM User Manual 12 Appendix III – Error And Warning Messages System error There is only one ‘System Error’ message that will be displayed. This is: 1. No BBME: This indicates a unit failure. Reset the unit by turning the power on and off. Contact your supplier if the problem persists.
  • Page 35 Micronics U1000-HM User Manual 3. When programming a Volume Pulse output the pulse width is limited to the range 3 to 99ms. If an invalid value is entered then the following warning message is displayed. Range 3 - 99 0000.0 4.

  • Page 36: Declaration Of Conformity

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